<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <!--径向渐变，圆形-->
    <style>
        body{
            background-color: #FFFFFF;
            background-image: linear-gradient(66deg, #FFFFFF 0%, #6284FF 50%, #FF0000 100%);
        }
    </style>
</head>
<body>

</body>
</html>